The default configuration will use SYS_USB_EVENT_POLL for handling the usb keyboard and it makes the system really slow (eg slow keypress, loading kernel/initrd from grub-efi is taking ages).
Using CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE seems to be improving things a lot, so use it.
Tested-by: Samuel Dionne-Riel samuel@dionne-riel.com Signed-off-by: Arnaud Patard arnaud.patard@rtp-net.org Index: u-boot/configs/pinebook-pro-rk3399_defconfig =================================================================== --- u-boot.orig/configs/pinebook-pro-rk3399_defconfig +++ u-boot/configs/pinebook-pro-rk3399_defconfig @@ -78,6 +78,7 @@ CONFIG_USB_OHCI_GENERIC=y CONFIG_USB_DWC3=y CONFIG_ROCKCHIP_USB2_PHY=y CONFIG_USB_KEYBOARD=y +CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE=y CONFIG_USB_HOST_ETHER=y CONFIG_USB_ETHER_ASIX=y CONFIG_USB_ETHER_RTL8152=y